Hi Group,
I have a Keithley 155 Null Detector/Microvoltmeter which has some
problems. I downloaded a manual from the Keithley web site, but when
I looked for the schematic, I couldn't find it. Section 5 of the
manual says the schematic is shown in Figure 5-3, but it's not there
in the manual provided on Keithley's download site. I contacted
Keithley about the omission and was told by John Sobola that all
schematics had been removed from downloadable manuals on Keithley's
site, as well as the instruction manuals for all current Keithley
products.
When I asked if he could send me one, he said I had to provide the
company with a bunch of info as to who I was, what company I
represented, what I did, and why I wanted a schematic. I sent him the
info he requested (it was for my own personal use), but did not
receive a reply from him for a couple of weeks. I wrote him back and
asked him if he needed more info, and he finally told me that the
company had decided not to make the schematics available. I suspect
if I had lied and told him that I was the engineering director of
Company X and we had $750,000 worth of Keithley gear in the lab, he
would have overnighted the schematic to me.
I have no idea as to why they would have done this, but it pretty much
makes the downloadable manuals useless without the schematic. As it
stands right now, I have a sweet little meter sitting on my bench
which is completely brain-dead!
Please let me know (OFFLINE) if you can help me out. I don't want to
start another flame war.
Thanks,
Mike, WB0LDJ
